Power-table guard



May 19, 1925.-

l. F. WEBB POWER TABLE GUARD WITNESS 5 Filed Marh 25, 1925 2 Sheets-Sheet 2 V392, E ik ATTORNEY Patented May 19, 1925.

UNITED STATES y I 1,538,534 4PATENTr`- OFFICE. 4-

IEVING-E. WEBB, OE ELIZABETH, NEW `masser lAssIsrNon` To TnEfsINGEE MANU-` FACTURING COMPANY, or ELIZABETH, NEW JERSEY, A CORPORATION or NEW JERSEY.

POWER-TABLE GUARD.

Appllzaton filed March 215, 11925. Serial No. 18,2()0.

To all 'whom t 'may concern? Be it lrnown that I, IRVING F. VEBB, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Power Table Guards, of which the following is a specifi cat-ion, reference beinglhad therein to the accompanying drawings. j

This invention relates to power-tablesvof the type commonly used in garment factories to support and drive a series of sewing machines. In a power-table installation each sewing machine of the series on the table is commonly belted toa respective treadle-controlled clutch-and-brale device known as a power-transmitter, the live element of which is belt-driven from a line-shaft running lengthwise of andbelow the table-top. The table-top is carried by a row of legs and the space lengthwise of the table between adjacent legs is known as a section.

The present invention hasy for an object to provide a simple, inexpensive and effective guard for the lineshaft, pulleys, belts and various moving parts below the table-top.

A further object of the invention is to provide a power-table guard which will meet the requirements of factory inspectors.

- Still further, the invention has for an object to provide a power-table guard which may be readily shifted or removed from operative position, when desired, to afford access to the parts beneath the table-top.

To the attainment of the above and other objects, as will hereinafter appear, the `present guard is preferably constructed in the form of a grid-like structure comprising end castings connected by a plurality of spaced parallel rods the lengthof which is substantially equal to the length of a section of the table. An intermediate arm through which certain of the full-length rods pass constitutes a support for one end of each of certain other rods which are-shorter than the full-length rods and have their other ends supported by one of the end-castings. Mounted on the top-most one of the fulllength rods adjacent the ends of the part- `length rods is a transmitter-belt guard which may be adjustedlengthwise of'or swung axially relative to its supporting rod. The trai'ismitter-b'elt guard is preferably formed with an anertured boss through'which its supporting `rod passes, a set-screw serving to tighten the guard' in effective position.`

In vthe accompanying drawings, Fig. 1 i

`is a fronty elevation of a section of a powertable with a guard embodying the invention. Fig. 2 is a 4fragmentary end elevation ofthe sectiony shown in Fig. 1 `Fig. 3 is a section on the line 3-3, F ig. 2. .Figli isa section on the line 4 4, Fig. 2, and F ig. 5 is a perspective view of the'guard removed from the power-table. v

The power-table section `illustratedcomprises legs l and cross beams 2 carrying the table-top boards 3 which extend lengthwise of the table and on whichare stationed the sewing machines, oneof which is shown at 4. Journaled in hangers 5 is the constantly ruiming `line-shaft `6 carrying the driving 4pulley mwhich is lconnected'by the belt 8 to the live-element 9 of the power-stranemitter 'or clutch-and-brake device,`the driven element 10 of which is connected by theV belt 1l to the balance-wheel 12 of the sewing machine 4f. The power-transinitter includes the usual operating lever 13 tov which the controlling treadle 14tis connected by means of the treadle-rod l5. ,These parts are all of usual and well-known construction.

The powertable legs 1 are formed with co-planar inclined open-topped sockets or `slideways 16 having rbottom stop-wallsl or rests These slideways receive the coplanar lugs .18 of the end-member or castings 19, 20, of the present guard. The endmembers 19, 2O have co-planar arms 21, 22, which `carry a plurality of `spaced horizontal 'A rods 23 running substantially the full length of the section or space between the table-legs 1. The end-meinberf21` hasl an upward extension or arm 24: disposed at an angle to the arm 22. Mounted on the rods 23 is an intermediate member having angularly related arms 25, 26, the latter being substantially parallel to the arm` 24. One or more part-length rods 27 is or are carried by the arm 211 of an end-member and the arm 26 of the .intermediate member. One of the full-length rods 23 passes through the aperturedbossf2`8 ofthe transline position to expose the belt 8 without re-l moving thel entire Guard structure from operative position. xeessive end-play of the guard structure is prevented by means of the ribs 31 extendingvtransversely of the slideways 1 6 adjacent the bottom-rests 17.

The enti-re guard structure may be removed as a unit by merely slidingit outwardly and upwardly through' the upper' open ends of the supporting slideways 16 in the legs 1. The several horizontal rods 23, 27 of the guard are preferably secured in holes in their supporting arms by setscrews 32. The guard may also be removed from the table by loosening the end-member 20 and sliding it on the rods 23 towardI the intermediate member 25,. 26, thereby withdrawing the lugs 18 from the socket or slideway 16. The guard may be shipped in compact disassembled'form and readily assembled into a rigid structure ready to place in the power-table.

Having thus set forth the nature ofv the invention, what I claim herein is 1.v A guard for a: power-table section comprising,` a plurality of up-and-down supports and' a plurality of horizontal rods carried by said supports, certain of said rods being of reduced length,` and a. transmitterguard .mountedy on vone of' the full-length rods adjacent the end of a reduced length rod.

2V.A A guard for a power-table section comprising, a pair of end-membershaving substantially co-planar arms, one of said arms having an upward extension disposed at an angle to the plane of said arms', anl intermediate member comprising angularly related arms, a plurality of full-length rods connected to said end and intermediate members,- and oneI or more part-length rods connecting the upper arm of said intermediate member to the upward extension of one of the end-members.

The combination with a sewing machine power-table including spaced supporting legs, a line-shaft yand a' power-transmitter, said legs being formed with down`vv wardly and' inwardly inclined guard-receivlng sockets, of a shaft-guard removably fitted to said sockets, and a power-transmitterbelt guardi carried bv said shaft-guard and adjustable relative to the latter.

4. Thecombination with a sewing inacliine power-table having legs and guardreceiving sockets, of a guard' 'incluing a plurality ot` end-members received in said sockets and a plurality of spaced horizontal rods carried by said end-members, one of said end-members being adjustable longitudinally of andy rela-tive to said rods to facilitate removal of the guard from operative position. n

In testimony whereof I have signed my name to this specification.

Y ravine r. WEBB. 

